1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQUICKPATHVIEW_P_P_H |
5 | #define QQUICKPATHVIEW_P_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <private/qtquickglobal_p.h> |
19 | |
20 | QT_REQUIRE_CONFIG(quick_pathview); |
21 | |
22 | #include "qquickpathview_p.h" |
23 | #include "qquickitem_p.h" |
24 | |
25 | #include <QtQml/qqml.h> |
26 | #include <QtCore/qdatetime.h> |
27 | #include <QtCore/qcoreapplication.h> |
28 | |
29 | #include <private/qquickanimation_p_p.h> |
30 | #include <private/qqmldelegatemodel_p.h> |
31 | #include <private/qquicktimeline_p_p.h> |
32 | #include <private/qpodvector_p.h> |
33 | |
34 | QT_BEGIN_NAMESPACE |
35 | |
36 | class QQmlOpenMetaObjectType; |
37 | class QQuickPathViewAttached; |
38 | class QQuickPathViewPrivate : public QQuickItemPrivate, public QQuickItemChangeListener |
39 | { |
40 | Q_DECLARE_PUBLIC(QQuickPathView) |
41 | |
42 | public: |
43 | QQuickPathViewPrivate(); |
44 | |
45 | void init(); |
46 | |
47 | void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &) override { |
48 | if (change.sizeChange() && (!highlightItem || item != highlightItem)) { |
49 | if (QQuickPathViewAttached *att = attached(item)) |
50 | att->m_percent = -1; |
51 | scheduleLayout(); |
52 | } |
53 | } |
54 | |
55 | void itemDestroyed(QQuickItem *item) override |
56 | { |
57 | if (!items.removeOne(t: item)) |
58 | itemCache.removeOne(t: item); |
59 | } |
60 | |
61 | void scheduleLayout() { |
62 | Q_Q(QQuickPathView); |
63 | if (!layoutScheduled) { |
64 | layoutScheduled = true; |
65 | q->polish(); |
66 | } |
67 | } |
68 | |
69 | QQuickItem *getItem(int modelIndex, qreal z = 0, bool async=false); |
70 | void releaseItem(QQuickItem *item); |
71 | QQuickPathViewAttached *attached(QQuickItem *item); |
72 | QQmlOpenMetaObjectType *attachedType(); |
73 | void clear(); |
74 | void updateMappedRange(); |
75 | qreal positionOfIndex(qreal index) const; |
76 | bool isInBound(qreal position, qreal lower, qreal upper) const; |
77 | void createHighlight(); |
78 | void updateHighlight(); |
79 | void setHighlightPosition(qreal pos); |
80 | bool isValid() const { |
81 | return model && model->count() > 0 && model->isValid() && path; |
82 | } |
83 | |
84 | void handleMousePressEvent(QMouseEvent *event); |
85 | void handleMouseMoveEvent(QMouseEvent *event); |
86 | void handleMouseReleaseEvent(QMouseEvent *); |
87 | |
88 | int calcCurrentIndex(); |
89 | void createCurrentItem(); |
90 | void updateCurrent(); |
91 | static void fixOffsetCallback(void*); |
92 | void fixOffset(); |
93 | void setOffset(qreal offset); |
94 | void setAdjustedOffset(qreal offset); |
95 | void regenerate(); |
96 | void updateItem(QQuickItem *, qreal); |
97 | enum MovementReason { Other, SetIndex, Mouse }; |
98 | void snapToIndex(int index, MovementReason reason); |
99 | QPointF pointNear(const QPointF &point, qreal *nearPercent=0) const; |
100 | void addVelocitySample(qreal v); |
101 | qreal calcVelocity() const; |
102 | qint64 computeCurrentTime(QInputEvent *event) const; |
103 | void setDragging(bool d); |
104 | |
105 | QQuickPath *path; |
106 | int currentIndex; |
107 | QPointer<QQuickItem> currentItem; |
108 | qreal currentItemOffset; |
109 | qreal startPc; |
110 | QPointF startPoint; |
111 | QPointF startPos; |
112 | qreal offset; |
113 | qreal offsetAdj; |
114 | qreal mappedRange; |
115 | qreal mappedCache; |
116 | bool stealMouse : 1; |
117 | bool ownModel : 1; |
118 | bool interactive : 1; |
119 | bool haveHighlightRange : 1; |
120 | bool autoHighlight : 1; |
121 | bool highlightUp : 1; |
122 | bool layoutScheduled : 1; |
123 | bool moving : 1; |
124 | bool flicking : 1; |
125 | bool dragging : 1; |
126 | bool inRequest : 1; |
127 | bool delegateValidated : 1; |
128 | bool inRefill : 1; |
129 | QElapsedTimer timer; |
130 | qint64 lastPosTime; |
131 | QPointF lastPos; |
132 | qreal dragMargin; |
133 | qreal deceleration; |
134 | qreal maximumFlickVelocity; |
135 | QQuickTimeLine tl; |
136 | QQuickTimeLineValueProxy<QQuickPathViewPrivate> moveOffset; |
137 | int flickDuration; |
138 | int pathItems; |
139 | int requestedIndex; |
140 | int cacheSize; |
141 | qreal requestedZ; |
142 | QList<QQuickItem *> items; |
143 | QList<QQuickItem *> itemCache; |
144 | QPointer<QQmlInstanceModel> model; |
145 | QVariant modelVariant; |
146 | MovementReason moveReason; |
147 | QQuickPathView::MovementDirection movementDirection; // default |
148 | QQuickPathView::MovementDirection moveDirection; // next movement |
149 | QQmlOpenMetaObjectType *attType; |
150 | QQmlComponent *highlightComponent; |
151 | QQuickItem *highlightItem; |
152 | QQuickTimeLineValueProxy<QQuickPathViewPrivate> moveHighlight; |
153 | qreal highlightPosition; |
154 | qreal highlightRangeStart; |
155 | qreal highlightRangeEnd; |
156 | QQuickPathView::HighlightRangeMode highlightRangeMode; |
157 | int highlightMoveDuration; |
158 | int modelCount; |
159 | QPODVector<qreal,10> velocityBuffer; |
160 | QQuickPathView::SnapMode snapMode; |
161 | }; |
162 | |
163 | QT_END_NAMESPACE |
164 | |
165 | #endif |
166 | |